Problem in finding Exact result by using the following in Oracle Reports 6i

Question

Hello,
I am finding difficulty in producing the required result by using the following query in Reports 6i
(Note: - The query actual output and the my required output are as follows: -)
SELECT
DISTINCT
SH.S_HEAD_CODE,
B.BILL_ID,
B.SANCTION_DATE,
E.EMP_NAME,
E.EMP_DESIGNATION,
B.TOTAL_BILL,
NVL((SH.INITIAL_ALLOCATION-B.TOTAL_BILL), 0) BALANCE
FROM BILL B, PARAMETERS P,SUB_HEAD SH, EMPLOYEES E, BILL_DETAIL BD
WHERE
SH.S_HEAD_CODE=B.S_HEAD_CODE
AND B.S_HEAD_CODE=BD.S_HEAD_CODE
AND B.EMP_ID_NO=E.EMP_ID_NO
AND B.BILL_ID=BD.BILL_ID
The Output of the above query is as follows: -
Let say we have Total Amount Sanctioned Rs. 15,000,00/-
Name Total Bill (Rs.) Balance (Rs.)
Sohail 7147 1492853
Saqib 2131 1497869
Amir 6802 1493198
Shafiq 1214 1498786
Note:- In the above output the above query is subtracting the current balance from Total Sanctioned Amount (Rs. 1500000) each time, but
it should actually subtract the current bill amount from the previous balance like the below said result.
Name Total Bill (Rs.) Balance (Rs.)
Sohail 7147 1492853 {Previous Balance - Current Bill Amount (1500000-7147) }........ The previous balance was actual amount Rs. 1500000
Saqib 2131 1490722 {Previous Balance - Current Bill Amount (1492853 - 2131)}
Amir 6802 1483920 {Previous Balance - Current Bill Amount (1490722 - 6802)}
Shafiq 1214 1482706 {Previous Balance - Current Bill Amount (1483920 - 1214)}
Results Continue...........................
Please help me to solve this problem.
Thank you in advance

Answer 1

Its more like the case of a running total ...
You could analytical functions to achieve it or make the BILL a subquery of the BALANCE.
Try posting your query in the "SQL and PL/SQL" forum, veteran members there, can provide better answers.